Low N in coir/peat - advice wanted

Problem solved. I am PHing feed to 6.5. I also started feeding mid week. Runoff is at 6.1.

Plants looking great halfway through flower. They would be yellowing pretty good at this point if I hadn't changed anything.

umoles in the 400-700 range is PPF. With LED this basically means they're the same. PPFD is PPF per square meter. If you are taking a measurement with a par meter and getting 800-1200 umols that is PPFD readings. Take grid readings and find the average will give you the average PPFD. 800-1200 spread, average is possibly around 950-1000.

If you know the lamp/s output in umols (PPF) you divide by your square footage and multiply by 10.7 (sq/ft in a sq/meter) to find the average PPFD. 18 sq/ft space for instance has a lamp that outputs 1480 umols. 1480 / 18 * 10.7 = 880 PPFD

So you're saying it was a lighting issue all along?

polishpollack said:

So you're saying it was a lighting issue all along?

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No the lighting comments were replying to Breedingbull's comment on PPFD.

The problem was either PH too low or not feeding enough or both.

Rahz said:

No the lighting comments were replying to Breedingbull's comment on PPFD.

The problem was either PH too low or not feeding enough or both.

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Both for sure.

Peat based medias need to be amended with lime to buffer the low 3.5ish PH it has.